Inflation-valve for pneumatic tires



(No Model.)

T. B. JEFFERY. I INFLATION VALVB FOR PNEUMATIC TIRES. N0. 549,603..

Patented Nov. 12, 1895. 1 192.

P 1 w I :rwrrr iNFLATifiN- VALVE FDR mrurmrm Tm fiEEGIFXGJSIQE forling pssrt of Letfbera Patent 1530. 549,663, daizaii 1w! ovember 12, 1895.

ipplicmiou filed February 15, 1894. Serial No. 500,230. ,(Ho model.

T0 115 wiwm is may r-oncern:

lie it known that i', THOMAS ll. JEFFREY, a

citizen of the li'rzited Stalearesidirig at (hi caga, county 05: Cook, and Stale-01" Illinois, have lnventeal certain nevi and.- useful imvpan-W samenm in Inflation -2'alves for Yneumafiaurea, which is fully set forth in the annexezi apecifieaiign reference being hzid l ke accomgm-nj'iiig drawings, forming a pawl vthe valve body.

ti'aarimf.

In the drmringsfl igurg l is 2a defaiifleciiion, immsvrrrse with respect to the rim and u Wheel prm' flied with. my i mprovem ant, which shown in eleva-iiun, Fig. 2 an enlargil aertion'at the line i 021 Fig: 1, being: axial longitudinallyavirir respect to the inilaiing; zieviee. The aheath bring omitted. aideraii. sedti'on at i'heline I} '3 m; F of the neck and hegbl'nf the walve-bedy :uui the in- VBTVBQ cap which, when applied inverted, throes time valve 'QFE iis seat to permit the inflamed core in) vent. Fig. ,4 is a detail sevtion at the line l on'flig. 1. A is the rimof the wheel, adapted m hold a t-iregrhia'h mmprises the m1 ter sheath 0 r carer B and the pneumatic or inflatable (are D the nozzle Of the inflating apparatus, whicl1,beesmse it contains the check-valve which retains air under pressure within the (rare is, for comenience, referreg to as It comprises the Head l) anal the neck or stem D the head being intended to be inserted iiireugl'i an arm-hire C in Hm core i file rnamriai. of which will stretch to allow the head i "MISS through the aperture and contract s0 as to fit snugly aruund (M nmzk, and their-em]. c-uope ra-t-es with the washer E and. nut E- zipplieii upon the neck fmicsidr the core 1. in clamp H10 margin of the: aperture lightly.

One feature of my inmni ion wusislr, in

cupping 0r liullowing inland er slmnlfier of awe rt are whicii rmuld U -8 l clamp or bind (he nmlerial between fiat i'zu'vs or shoulderS iuiillllil the aperture.

in the (lraxvingfi I have slimvn lmrli ilw shoulder (Z' of the under side'of llw-liezul D', the face of the washer E, cupped or lmllmvml as described, and it is preferable thus 1'0 treat bollr the binding-surfaces. In order that (he rfiges 0f the washer and head thus cupped mhollowed may not out or weaken the fabric of he core Where they biml upo l it at a little distance from fire margin m: the aperture, I prefer to reinforce the fabric of the core by thickening if for somae istance around fluaperture greater an the radius 1 the lwml and Washer; and ir; order more fully lmth m prevent the stretching of the aperture and also the cutting oftlre fabric Where tho lliilllping' parts hind it i prq for in llirnw 111m 00ml c iimnediatel arcnnd the margin of llw aperture which obtains a seal in the hollmv 0f ilie cupped head or Washgr, or lmtli. in firder filial fife head I) may not prevent the proper engagement and action of the cover B with relation to the rim A, ii should lw as-snmll as possible {'snsistent with-its funci an of clamping the inflatable core; also, in order that iz'v may clamp securely, its under faceor shoulder, which has the fnnciion or bining the substance 0f the core around The aperture, should lie broad as possible. Beiween the demand fur a narrow lwml and broad lwul ier on the underside 01' ilw head it ima ines climpulsm-y m nmlw llio neck as mnall possible; .yel the n x-k muest emit-aim the tubular aperture for the air and the whole-dark: n'mst be inuzzpzrlilv ;l'.bcin;g rtaiiail will: rampart in the rim, or liiu nation (:5 swimming? Hie pump in ilw protruding: mid of "iiw mack would twist the cure and rui'n it, and would zllsfi fi'Qnrl m unism-mv mrvclmnplug-nut e'zripleyed inside he rim m clump tlw aim-P. Since the neck must be irmorl ed through the imaging which may be prmidod imii in tin: rim from (he iamw; Hilllh or silllhurl-ml the lirv, i 0211mm ill made inmpzziilv of umlug in llw ripening lllrmlgll \rllrli ii is iims illbilliijti, OXLQ-fil by having at 191211 puim a mm circular ",r seclinn of a form which might E23 circumseribetl almirtl-lle smaller vircular era]; portim: which protrudes from he inner ill largement and thereby the stem at the point,

stem, one increment being that which would :5 ing the first mun-circular enlartfemcnt.

the stem lllllfOXIlll and continimusly from the rin and on the rim i provide a latch or through which the neck of the valve-body is stem or handle G for that purpose.

o rim toward the opposite ends of the hu b, and

sitiou when secured to the riin, the latter bestrike up from the outer surface of the rim being higher at one Hide than at the other, so

nal direction of the metal at that point, but

der h ad of the nntl) is brought against the .vith that of the boss.- Iemploy a thumb-nut;

8 v seams at this part than at the protruding part; thb' clamping-nut must be provided with a seatnpou a threaded portion on the stem large enough to circumscrihe the noncircular enwhere it should he an small possible in order to leave as broad a shoulder as possible, for the head would be larger by two inerements than the protruding portion of the have been added to make it non-circular and prevent the stem from turning in the rim and the other increment that added to the first to obtain a circular out line, circumscribin order to avoid both these enlargements and make the stem at the ifincr part next thchead no larger than it must be at the protruding end where the pump screws onto it. i thread the end back toward the ehoulder. and then cut it away to produce two flat; sides fora little distance just beyond the nut ii that is, at a portion which will protrude through catch in the form of a slotted washer, adapted to be passed onto the, stem at the flattened part, and this washer being made fast to the rim eccentric-ally with respect to the opening inserted, prevents the. latter from turning when the latch has-been passed onto its fiatened portion. Most conveniently the washer G is pivotally attached to the rim, having a It is necessary that. the neck should protrude in su h direction that the pump can be attached without interfering with the spokes, which, as is well understood, diverge from the therefore the neck and pump when attached extend at an oblique angle to the plane of rotation of the wheel, unseen in Fig. l. in order that the valve-body ma vassume this poing too thin to atlord', by means of the walls of the aperture through which the neck is inserted, the necessary guidance to give the desired direction to the protriuling, neck, I

toward the inner or concave aide a bosu A. around the margin of the aperture, the boss that it forms a shoulder ob no to the origiat right angles to the direction in which it is desired to have the nozzle and pump when at tached pro ect. .Any expedient by which the nozzle-neck is clamp? tightly, so that the un shoulder of the boss A, will insure the proper direction to the nozzle; but this is more effectually secured if the clamp-nut on the outer side also operates against ashoulder parallel for this purpose on the neck outside the Washer a d I form the washer of such shape with reopect to the shape of the rim where the washer seats upon it that the out: aface of the washer when it is (hurt seated is parallel with the shoulder of the hos It. and therein. when the thumirnut'l in clamped, it compels the neck to assume the desir i oblique direction.

J is a check-valve which scab; at the inn r end of the longitudinal duct t nigh the neck D it has a, long needle-sum .l, which cvtemlsthrough the d uct,not owupyingzso much ofit,hnttherestillremainsamplrnpucei'ortb passage of air. The valve, with this t-l tlll, 2: inserted from the head end through the heal l)',in which its chamber (7 in formed, and it is retained in place therein by the cap-platll which screwed into the head after the valv put in place. his cap-plate having: the slot 11", which serv 5; both the Pillilflfii' ii permitting the passage of r and alrao atlording engagement for a Suitable tool to screw the head in place. The valve-hcad .l, which is of rubber, is preferably provided wi h a slender rubber terminal .l at its outer si'..le

that; in, opposite the stem-which, when the valve is on its Scat, touches the inner face of the cap-plate l5, 5%) that the valve is held normallyscatcd: but the terminal being quite flexible readily bends when the pumpis forcing the air in past the valve to permit the latterto leave its seat sufilciently for inflation.

L is a cup employed to close the outer end of the neck I) when the pump is detached after inflation is completed. In the cap there is a rubber gasket l'., which real zes an airtight joint with the end of the noel: when the cap isscrewedonteit, therebysupplen'ientingthe check-valve and preventing any escape ofair, even though the latter should leak.

- This gasket would be liable to be ground away by the friction between it and the end of the noel: upon one side andthc bottom oi'thc cap on the other side;or, if too elastic to be ground by that action, womd be distorted, so that; it would not serve its purpose of making an airtight seatingbut for a device which i. provide to prevent it; froniheingthus ground between the two surfaces when the ca p is screwed on. This device consists in a conical metal bane orturnblock I), whose npexncats'in a center wicket at the bottom of the cap and whore base supports the gasket. 'i'vhen the cap is screwed on, as soon as th rauicet coincsinto contact with the end of tin .iecl: i), as soon as the friction between the gasket and the neck bcconien greater than the friction of the point of' the cone 1) in itsscat, (thclatterl'riction being very slight,) the gasket; will cease to turn with the cap, and instead the cap will turn with the oointof the cone so that the gasket will he ueezed directlybetween the end of the neck upon one side and the base of the cone upon the other side, all wearing-friction being thus prevented. r

The cap is reversible-thatis,.the opposite end from that already described-4s also interiorly threaded to .fit the end of the neck,

the bore, reaches and pushes on the end of the stem .l' and unseats the valve J. A vent-ap erture L is provided in the cap, leading from 'the outer surface into the threadedxeavity which has the center-pin L, and when the latter has thus pushed the valve oft itsseat the air escapi 11;: past the valve finds vent through this aperture 1,. This atfords a convenient means of relieving the pressure from the in-, tia-ted core without detachingand leaving detached the cap, which would be liable to be mislaid or lost while waiting for the core to vent, but which, with this structure, is always kept sa t'el y in place.

I clainiy 1. In combination with the rim and the inflatable tire core, the inflating; nozzle having a neck which penetrates the wall of the core, and a shoulder on the inner side of said wall, the neck being continuously threaded from the outer end toward the shoulder; a nut 0n the neck between the core and the rim, and a-second nut outside the rim, and a catch between the rim and the outer-nut to preventthe nozzle from turning in the rim: substantially as set forth.

:3. In combination with therim and the inflatable core, the inflating nozzle penetrating the rim, said rim having a shoulder struck up in the metal thereof about the aperture at which the nozzle penetrates it, in a planeobliqne to the plane of rotation of the wheel, and clamping devices which secure the nozzle to the .rim adapted to bind against such oblique shoulder to cause the nozzle neck or stem to protrude obliquely divergent from the plane of rotation of the wheel: substantially .as set forth.

3. In conibinat ion with the rim and the inflatable core, the inflating nozzle penetrating the rim, the aperture through which it extends being surrounded by an inwardly struck boss oblique to the plane of rotation of the wheel; a washer on the outside of the rim having one face shaped to the rim and the other face flat and adapted to be parallel with the face of the bosswhen the face of said washer which is shaped to the rim is suitably seated on the latter, and clamping nuts on the neck of the nozzle, one outside and the other inside of the rim, adapted to bind against the washer and the boss on their parallel faces respectively: substantially as set forth.-

4. In combination with the rim and the inflatable core, a nozzle provided with a nut to clamp it to the core and having its neck which penetrates the rim continuously threaded, and provided with a device for clamping it to the rim located exteriorlyto the latter,-whereby the nut which clamps the core may be as small as that which clamps the rim, the neck having its thread cut away outside the rim and adjacent thereto to form a flat seat on the side of the' neck, and a latch pivoted to the rim and adapted to engage the flat seatto prevent the rotation of the nozzle in the rim: substantially as set forth.

5. In combination with a nozzle having a check valve at the inner end adapted to seat outward and having a stem which extends into the nozzle neck; a suitably threaded cover adapted to have either end screwed to the end of the neck, and provided with acenter pin at. one end whieh projects into the socket of the neck and encounters the end of the stem as the cover is screwed on, to forcethe valve olli its seat; the valve stem not protruding from the end of the neck and the other end of the cover being adapted thereby to be screwed down without encountering said stem: substantially as setforth.

(3. In combination with the nozzle having avalve chamber at the. inner end, the valve located in such chamber and seating outward and provided with a stem which extends outward through the neck of the nozzle; a cap Chicago, Illinois, this 13th day of February,

THOS. B. JEFFERY.

Witnesses: CHAS. S. BURTON, JEAN ELLIOT T. 

